Properties of the Number 2828

Two Thousand Eight Hundred Twenty-Eight

Basics

Value: 2827 → 2828 → 2829

Parity: even

Prime: No

Previous Prime: 2819

Next Prime: 2833

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 7 × 101

Divisors: 1, 2, 4, 7, 14, 28, 101, 202, 404, 707

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101100001100

Octal: 5414

Duodecimal: 1778

Hexadecimal: b0c

Square: 7997584

Square Root: 53.178943201233324

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Egyptian fraction representation of sqrt(5) (A002163) using a greedy function. A248235

Doublets: base-10 representation is the juxtaposition of two identical strings. A20338

Numbers that are the sum of 7 positive 7th powers. A3374

Numbers n such that Bernoulli number B_n has denominator 870. A272185

a(n) = floor(n*φ¹⁰), where φ is the golden ratio, A001622. A4925

Numbers m such that there are precisely 11 groups of order m. A249554

T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281056

Numbers k with property that average digit of k² is s=7. A164773

T(n,k)=Number of length-n 0..k arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1. A269640

Number of ways to write n as an ordered sum of 7 primes. A340963